Refrigeration and Air Conditioning

Vertical lines on pressure-enthalpy chart show constant_______________?

Byadmin January 25, 2019August 16, 2021

Vertical lines on pressure-enthalpy chart show constant_______________?

A. pressure lines
B. temperature lines
C. total heat lines
D. entropy lines
E. volume lines

Refrigeration and Air Conditioning

Rating of a domestic refrigerator is of the order of__________________?

Rating of a domestic refrigerator is of the order of__________________?

A. 0.1 ton
B. 5 tons
C. 10 tons
D. 40 tons
E. 100 tons

Read More Rating of a domestic refrigerator is of the order of__________________?
Refrigeration and Air Conditioning

At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant_________________?

At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant_________________?

A. decreases
B. increases
C. remains same
D. depends on other factors
E. none of the above

Read More At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant_________________?
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In a shell and coil condenser, water flows in the shell and the refrigerant in the coil.

Question: In a shell and coil condenser, water flows in the shell and the refrigerant in the coil.
[A].

True
[B].
False

Answer: Option B

Explanation:

No answer description available for this question.

Read More In a shell and coil condenser, water flows in the shell and the refrigerant in the coil.
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In case of liquids and gases, the heat transfer takes place according to

Question: In case of liquids and gases, the heat transfer takes place according to
[A].

conduction
[B].
convection
[C].
radiation
[D].
none of these

Answer: Option B

Explanation:

No answer description available for this question.

Read More In case of liquids and gases, the heat transfer takes place according to
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

The boiling point of carbon dioxide is

Question: The boiling point of carbon dioxide is
[A].

-20.5°C
[B].
-50°C
[C].
-63.3°C
[D].
-78.3°C

Answer: Option D

Explanation:

No answer description available for this question.

Read More The boiling point of carbon dioxide is
Refrigeration and Air Conditioning

The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases ____________________ ?

The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases ____________________ ?

A. will be higher
B. will be lower
C. will remain unaffected
D. may be higher or lower depending upon the nature of non-condensable gases
E. unpredictable

Read More The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases ____________________ ?

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